Improvement in map-exhibitors



J. Humanismus.

Mlap-Ex'hi nur;

A Patented Feb. 2,1875.

J i@ mvinom 4M W nmnms) wnmasszs;

UNITED STATES PATENT OFFICE,

JOHN LIOHTENBERGER, OF FORT .WAYNE INDIANA.

IMPROVEMENT IN MAP-EXHIBITORS.

Specification forming part of Letters Patent No. 159,335, dated February '2, 1875; application led July 25, 1874.

Fig. 1.

Similar letters of reference indicate corresponding parts.

A, B, and G represent a bracket or frame for hanging on a Wall to support the maproller E, which may be mounted directly in the bracket, one in front of another, as shown, at the right hand of Fig. 2 or they may be arranged in the hollovvr cylinder F, mounted on pivots G, so as to revolve upon its axis to bring the maps into position for pulling them down, a slot, H, being formed for each map to 1 drop through, and an endless cord or belt, I, with a suitable idle v pulley, K, may be employed for turning the cylinder.

Instead of a close cylinder, a revolving rack or frame may be employed.

Any approved kind of spring contrivance may be used for rolling up the maps.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination, with rack A, of the slotted cylinder F H, provided on the inside with a series of rollers, E, arranged about its shaft G, and having on the outside a drive-pulley connected with an idler, K, by a belt, I, as and for the purpose specified.

JOHN LIOHTENBERGER.

Witnesses:

E. A. Ross LEWIN, GEORGE J. MCCURHEY. 

